文献类型：期刊文献

英文题名：Experimental and numerical study on gas-solid two-phase flow through regulating valve of pulverized coal flow

作者：Chen, Meihua[1];Lu, Haifeng[1];Jin, Yong[1];Guo, Xiaolei[1];Gong, Xin[1];Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2020

卷号：155

起止页码：1

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20200207994038);WOS:【SCI-EXPANDED(收录号:WOS:000516887800001)】；

基金：This work was supported by the National Key R&D Program of China (2018YFC0808500), the National Natural Science Foundation of China (51876066), the Shanghai Engineering Research Center of Coal Gasification (18DZ2283900) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Gas-solid two-phase flow; Regulating valve of pulverized coal flow; CPFD; Eulerian-Lagrangian method; Pulverized coal gasification

摘要：Regulating valve of pulverized coal flow is an important gas-solid two-phase valve in the pulverized coal gasification process. Flow characteristics of gas-solid two-phase flow are studied by experimental and numerical approach of computational particle fluid dynamic (CPFD), respectively. The regulation performance of the regulating valve and its influence on the system were investigated. The strong nonlinearity of the relationship between the valve opening and coal flow rate was revealed by experiments and three regions were defined based on the change trend of the coal mass flow rate with the valve opening. Based on the CPFD approach, the process of particles flowing through the regulating valve was observed, and flow parameters including pressure distribution, velocity distribution, and particle volume fraction along the flow channel were analyzed. The model reveals that the presence of the valve introduces strong local inhomogeneities in the gas-solid flow that are studied in order to estimate the regions of the pipe that are mostly affected by the regulating valve. Numerical results indicate that the CPFD method is suitable for the study of pneumatic conveying system with complex flow channels on an industrial scale and can provide a reference for structural design of the regulating valve. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.